ABSTRACT
An organic luminescence material of white light was investigated. The organic luminescence film was made by heating and melting method. The film consists of riboflavin, anthrone derivative, and linear low-density polyethylene. The results show that the spectra of luminescence films were affected by weight ratio and heating time of the made films. The spectra were wide band from green light to red light. The organic white light emitting diodes made of this film have super performance.
Subject(s)
Light , Luminescence , Organic Chemicals/chemistry , Semiconductors , Anthracenes/chemistry , Hot Temperature , Lighting/instrumentation , Lighting/methods , Luminescent Measurements/methods , Riboflavin/chemistry , Spectrometry, FluorescenceABSTRACT
The influence of dispersion and nonlinearity on the spectra was analysed. The nonlinear Schrödinger equation was solved numerically in the frequency domain. The effect of the initial chirp on the spectra of different formats was simulated. It was found that the influence of the initial chirp on the spectra changed with different formats. The positive initial chirps make spectra spreading and negative initial chirps have little influence upon spectra for Gauss pulses. For super Gauss pulses, the spectra have some side tails, which cause energy loss, but the initial chirp has very little effect on the spectra. The initial chirps have a great influence on the spectra for soliton pulse, especially for high order soliton, which suggests that initial chirp must be decreased for stable pulse transmission.
